Studies on Real and Imaginary Part of Permeability for Sm-Dy Substituted Mg Ferrite

摘要

The ferrite samples having composition Mg[(Sm)0.5(Dy)0.5]xFe2-xO4,in which x varies from 0.05 to 0.3 in steps of 0.05 have been prepared by using combustion method.X-ray diffraction analysis confirmed the formation of cubic spinel structure in addition of ortho-ferrite phase due to substitution of rare earth ions.The initial permeability and complex permeability of toroid samples are calculated by measuring the values of inductance and Q-factor.It is seen that initial permeability and real part of initial permeability increases with increase in Samarium(Sm)-Dysprosium(Dy)rare earth element in magnetium(Mg)up to x = 0.15 and thereafter it decreases.The composition Mg[(Sm)0.5(Dy)0.5]0.15Fe1.85O4 show low loss factor and initial permeability becomes higher as compared to other prepared rare earth content samples.